Joseph Baz replied:

Mark when i went to tassie i drove my troopie the Spirit of Tasmania was the cheapest,we drove the veh into the cargo deck,they secure it and u go to u cabin they have all sorts of entretainment for the overnight trip,if u suffer from motion sickness get some pills as it gets quiet rough after port Phillip bay (abuot an hour into the trip)Enjoy it Tassie is trully beautifull
cheers JOE